Part 9 of 10 of Building Instagram's Authentication Backend . If you're just joining, the repo is here and you can catch the earlier parts on the YouTube playlist . Eight parts of code, zero runs By the end of part 8, every layer of this backend existed: DTOs, exceptions, entities, repositories, five services, a security filter chain and a controller. And I had never started the application. Not once. Everything so far was code I'd reasoned through and believed would work. This part is where that belief gets tested. We containerize the app, put Postgres, Redis and a fake mail server next to it, and bring all four up with one command. It did not work the first time, so this post is the real debugging session, with each bug, its symptom and its fix. If you're containerizing your own Spring Boot app, there's a good chance you'll hit at least one of these. In this post: A multi-stage Dockerfile for Spring Boot, line by line A docker-compose.yml ...
Python Development Crash Guide 2026 — Part 6 (Job-Ready Blueprint: Projects, Roadmap, Resume & Interview Preparation)
Python Development Crash Guide 2026 — Part 6: Job-Ready Blueprint: Projects, Resume & Interview Prep Learning Python is the easy part. Getting hired with Python — that's where most people get stuck. Not because they lack knowledge, but because they can't prove what they know. This final part is about turning everything from Parts 1–5 into something a recruiter, hiring manager, or interviewer can evaluate. I've been on both sides of this. I've prepared for interviews, built portfolio projects, and landed roles. I also run mock interview sessions on Topmate where I see exactly what works and what doesn't when candidates present their Python experience. This post is built on that. What "Job-Ready" Actually Means I want to be blunt about this because most guides aren't. Being job-ready doesn't mean you know every Python feature. It doesn't mean you've completed 15 Udemy courses or have 200 LeetCode solutions. I've interview...